I’m going to try it locally in a minute (as I don’t use google media myself) but my first guess is you need to append the file extension. It’s worth a try. So turn it into this :
app_files.university(str(school_info[0]['id'])+".JPG")
I don’t think any assumptions are made about the file type.
edit
Ok, try this :
get_open_form().page_panel.get_components()[0].image_1.source = app_files.university.get(str(school_info[0]['id'])+".JPG")